Libav
dv_profile.c
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * Libav is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with Libav; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <stdint.h>
20 
21 #include "config.h"
22 
23 #include "libavutil/common.h"
24 #include "libavutil/log.h"
25 #include "libavutil/pixdesc.h"
26 #include "avcodec.h"
27 #include "dv_profile.h"
28 #include "dv_profile_internal.h"
29 
30 #if CONFIG_DVPROFILE
31 
32 static const uint8_t dv_audio_shuffle525[10][9] = {
33  { 0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
34  { 6, 36, 66, 26, 56, 86, 16, 46, 76 },
35  { 12, 42, 72, 2, 32, 62, 22, 52, 82 },
36  { 18, 48, 78, 8, 38, 68, 28, 58, 88 },
37  { 24, 54, 84, 14, 44, 74, 4, 34, 64 },
38 
39  { 1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
40  { 7, 37, 67, 27, 57, 87, 17, 47, 77 },
41  { 13, 43, 73, 3, 33, 63, 23, 53, 83 },
42  { 19, 49, 79, 9, 39, 69, 29, 59, 89 },
43  { 25, 55, 85, 15, 45, 75, 5, 35, 65 },
44 };
45 
46 static const uint8_t dv_audio_shuffle625[12][9] = {
47  { 0, 36, 72, 26, 62, 98, 16, 52, 88}, /* 1st channel */
48  { 6, 42, 78, 32, 68, 104, 22, 58, 94},
49  { 12, 48, 84, 2, 38, 74, 28, 64, 100},
50  { 18, 54, 90, 8, 44, 80, 34, 70, 106},
51  { 24, 60, 96, 14, 50, 86, 4, 40, 76},
52  { 30, 66, 102, 20, 56, 92, 10, 46, 82},
53 
54  { 1, 37, 73, 27, 63, 99, 17, 53, 89}, /* 2nd channel */
55  { 7, 43, 79, 33, 69, 105, 23, 59, 95},
56  { 13, 49, 85, 3, 39, 75, 29, 65, 101},
57  { 19, 55, 91, 9, 45, 81, 35, 71, 107},
58  { 25, 61, 97, 15, 51, 87, 5, 41, 77},
59  { 31, 67, 103, 21, 57, 93, 11, 47, 83},
60 };
61 
62 /* macroblock bit budgets */
63 static const uint8_t block_sizes_dv2550[8] = {
64  112, 112, 112, 112, 80, 80, 0, 0,
65 };
66 
67 static const uint8_t block_sizes_dv100[8] = {
68  80, 80, 80, 80, 80, 80, 64, 64,
69 };
70 
71 static const AVDVProfile dv_profiles[] = {
72  { .dsf = 0,
73  .video_stype = 0x0,
74  .frame_size = 120000, /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
75  .difseg_size = 10,
76  .n_difchan = 1,
77  .time_base = { 1001, 30000 },
78  .ltc_divisor = 30,
79  .height = 480,
80  .width = 720,
81  .sar = {{8, 9}, {32, 27}},
82  .pix_fmt = AV_PIX_FMT_YUV411P,
83  .bpm = 6,
84  .block_sizes = block_sizes_dv2550,
85  .audio_stride = 90,
86  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
87  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
88  .audio_shuffle = dv_audio_shuffle525,
89  },
90  { .dsf = 1,
91  .video_stype = 0x0,
92  .frame_size = 144000, /* IEC 61834 - 625/50 (PAL) */
93  .difseg_size = 12,
94  .n_difchan = 1,
95  .time_base = { 1, 25 },
96  .ltc_divisor = 25,
97  .height = 576,
98  .width = 720,
99  .sar = {{16, 15}, {64, 45}},
100  .pix_fmt = AV_PIX_FMT_YUV420P,
101  .bpm = 6,
102  .block_sizes = block_sizes_dv2550,
103  .audio_stride = 108,
104  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
105  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
106  .audio_shuffle = dv_audio_shuffle625,
107  },
108  { .dsf = 1,
109  .video_stype = 0x0,
110  .frame_size = 144000, /* SMPTE-314M - 625/50 (PAL) */
111  .difseg_size = 12,
112  .n_difchan = 1,
113  .time_base = { 1, 25 },
114  .ltc_divisor = 25,
115  .height = 576,
116  .width = 720,
117  .sar = {{16, 15}, {64, 45}},
118  .pix_fmt = AV_PIX_FMT_YUV411P,
119  .bpm = 6,
120  .block_sizes = block_sizes_dv2550,
121  .audio_stride = 108,
122  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
123  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
124  .audio_shuffle = dv_audio_shuffle625,
125  },
126  { .dsf = 0,
127  .video_stype = 0x4,
128  .frame_size = 240000, /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
129  .difseg_size = 10, /* also known as "DVCPRO50" */
130  .n_difchan = 2,
131  .time_base = { 1001, 30000 },
132  .ltc_divisor = 30,
133  .height = 480,
134  .width = 720,
135  .sar = {{8, 9}, {32, 27}},
136  .pix_fmt = AV_PIX_FMT_YUV422P,
137  .bpm = 6,
138  .block_sizes = block_sizes_dv2550,
139  .audio_stride = 90,
140  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
141  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
142  .audio_shuffle = dv_audio_shuffle525,
143  },
144  { .dsf = 1,
145  .video_stype = 0x4,
146  .frame_size = 288000, /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
147  .difseg_size = 12, /* also known as "DVCPRO50" */
148  .n_difchan = 2,
149  .time_base = { 1, 25 },
150  .ltc_divisor = 25,
151  .height = 576,
152  .width = 720,
153  .sar = {{16, 15}, {64, 45}},
154  .pix_fmt = AV_PIX_FMT_YUV422P,
155  .bpm = 6,
156  .block_sizes = block_sizes_dv2550,
157  .audio_stride = 108,
158  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
159  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
160  .audio_shuffle = dv_audio_shuffle625,
161  },
162  { .dsf = 0,
163  .video_stype = 0x14,
164  .frame_size = 480000, /* SMPTE-370M - 1080i60 100 Mbps */
165  .difseg_size = 10, /* also known as "DVCPRO HD" */
166  .n_difchan = 4,
167  .time_base = { 1001, 30000 },
168  .ltc_divisor = 30,
169  .height = 1080,
170  .width = 1280,
171  .sar = {{1, 1}, {3, 2}},
172  .pix_fmt = AV_PIX_FMT_YUV422P,
173  .bpm = 8,
174  .block_sizes = block_sizes_dv100,
175  .audio_stride = 90,
176  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
177  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
178  .audio_shuffle = dv_audio_shuffle525,
179  },
180  { .dsf = 1,
181  .video_stype = 0x14,
182  .frame_size = 576000, /* SMPTE-370M - 1080i50 100 Mbps */
183  .difseg_size = 12, /* also known as "DVCPRO HD" */
184  .n_difchan = 4,
185  .time_base = { 1, 25 },
186  .ltc_divisor = 25,
187  .height = 1080,
188  .width = 1440,
189  .sar = {{1, 1}, {4, 3}},
190  .pix_fmt = AV_PIX_FMT_YUV422P,
191  .bpm = 8,
192  .block_sizes = block_sizes_dv100,
193  .audio_stride = 108,
194  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
195  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
196  .audio_shuffle = dv_audio_shuffle625,
197  },
198  { .dsf = 0,
199  .video_stype = 0x18,
200  .frame_size = 240000, /* SMPTE-370M - 720p60 100 Mbps */
201  .difseg_size = 10, /* also known as "DVCPRO HD" */
202  .n_difchan = 2,
203  .time_base = { 1001, 60000 },
204  .ltc_divisor = 60,
205  .height = 720,
206  .width = 960,
207  .sar = {{1, 1}, {4, 3}},
208  .pix_fmt = AV_PIX_FMT_YUV422P,
209  .bpm = 8,
210  .block_sizes = block_sizes_dv100,
211  .audio_stride = 90,
212  .audio_min_samples = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
213  .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
214  .audio_shuffle = dv_audio_shuffle525,
215  },
216  { .dsf = 1,
217  .video_stype = 0x18,
218  .frame_size = 288000, /* SMPTE-370M - 720p50 100 Mbps */
219  .difseg_size = 12, /* also known as "DVCPRO HD" */
220  .n_difchan = 2,
221  .time_base = { 1, 50 },
222  .ltc_divisor = 50,
223  .height = 720,
224  .width = 960,
225  .sar = {{1, 1}, {4, 3}},
226  .pix_fmt = AV_PIX_FMT_YUV422P,
227  .bpm = 8,
228  .block_sizes = block_sizes_dv100,
229  .audio_stride = 90,
230  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
231  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
232  .audio_shuffle = dv_audio_shuffle625,
233  },
234  { .dsf = 1,
235  .video_stype = 0x1,
236  .frame_size = 144000, /* IEC 61883-5 - 625/50 (PAL) */
237  .difseg_size = 12,
238  .n_difchan = 1,
239  .time_base = { 1, 25 },
240  .ltc_divisor = 25,
241  .height = 576,
242  .width = 720,
243  .sar = {{16, 15}, {64, 45}},
244  .pix_fmt = AV_PIX_FMT_YUV420P,
245  .bpm = 6,
246  .block_sizes = block_sizes_dv2550,
247  .audio_stride = 108,
248  .audio_min_samples = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
249  .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
250  .audio_shuffle = dv_audio_shuffle625,
251  }
252 };
253 
254 void ff_dv_print_profiles(void *logctx, int loglevel)
255 {
256  int i;
257  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
258  const AVDVProfile *p = &dv_profiles[i];
259  av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
260  "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
261  p->time_base.den, p->time_base.num);
262  }
263 }
264 
265 #endif /* CONFIG_DVPROFILE */
266 
268  const uint8_t* frame, unsigned buf_size)
269 {
270 #if CONFIG_DVPROFILE
271  int i, dsf, stype;
272 
273  if (buf_size < 80 * 5 + 48 + 4)
274  return NULL;
275 
276  dsf = (frame[3] & 0x80) >> 7;
277  stype = frame[80 * 5 + 48 + 3] & 0x1f;
278 
279  /* 576i50 25Mbps 4:1:1 is a special case */
280  if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {
281  return &dv_profiles[2];
282  }
283 
284  for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
285  if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
286  return &dv_profiles[i];
287 
288  /* check if old sys matches and assumes corrupted input */
289  if (sys && buf_size == sys->frame_size)
290  return sys;
291 #endif
292 
293  return NULL;
294 }
295 
297  enum AVPixelFormat pix_fmt)
298 {
299 #if CONFIG_DVPROFILE
300  int i;
301 
302  for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
303  if (height == dv_profiles[i].height &&
304  pix_fmt == dv_profiles[i].pix_fmt &&
305  width == dv_profiles[i].width)
306  return &dv_profiles[i];
307 #endif
308 
309  return NULL;
310 }
int num
numerator
Definition: rational.h:44
#define FF_ARRAY_ELEMS(a)
void ff_dv_print_profiles(void *logctx, int loglevel)
Print all allowed DV profiles into logctx at specified logging level.
uint8_t
const AVDVProfile * sys
Definition: dvenc.c:44
enum AVPixelFormat pix_fmt
Definition: dv_profile.h:45
AVRational time_base
Definition: dv_profile.h:40
const AVDVProfile * av_dv_frame_profile(const AVDVProfile *sys, const uint8_t *frame, unsigned buf_size)
Get a DV profile for the provided compressed frame.
Definition: dv_profile.c:267
int frame_size
Definition: dv_profile.h:37
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:168
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:69
const AVDVProfile * av_dv_codec_profile(int width, int height, enum AVPixelFormat pix_fmt)
Get a DV profile for the provided stream parameters.
Definition: dv_profile.c:296
enum AVPixelFormat pix_fmt
Definition: movenc.c:843
NULL
Definition: eval.c:55
static int width
Definition: utils.c:156
Libavcodec external API header.
int height
Definition: gxfenc.c:72
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
common internal and external API header
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:72
int den
denominator
Definition: rational.h:45
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:1540
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63